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CiscoXR 12000 Series Router Ethernet Line Card Installation
OL-7861-01
Line Card Memory
•For a socket with dual release levers (seeFigure 48), pull down both levers at the same time to eject
the DIMM.
or
•For a socket with a single release lever (see Figure49), pull the lever to eject the DIMM.
Caution Handle the edges of the DIMM only. Do not touch the integrated circuit devices on the DIMM, the metal
traces, or fingers, along the edge of the DIMM, or the pins in the DIMM socket.
Step5 As one end of the DIMM is released, grasp the top corners of the DIMM with the thumb and forefinger
of each hand and pull the DIMM completely out of its socket.
Step6 Immediately place the DIMM in an antistatic bag to protect it from ESD damage.
Step7 Repeat Step 4 through Step 6 for any remaining DIMMs that you want to remove.
Installing a DIMM
This section contains instructions for installing DIMM memory into a line card.
Note If you are upgrading packet memory, both DIMM sockets of a given pair (either the transmit buffer or
the receive buffer) must be populated with a DIMM of the same type and size.
To install DIMMs in a line card, follow these steps:
Step1 Attach an ESD-preventive wrist or ankle strap and follow its instructions for use.
Step2 Place the line card on an antistatic mat so that the faceplate is nearest to you.
Caution To prevent router and memory problems, all DIMMs installed in the line card must be 3.3V devices.
Step3 Remove the new DIMM from its protective antistatic bag.
Step4 Grasp the edges of the DIMM only. Do not touch the integrated circuit devices on the DIMM, the metal
traces, or fingers, along the edge of the DIMM, or the pins in the DIMM socket. (See Figure 50.)
Step5 To position the DIMM for insertion, orient it at the same angle as the DIMM socket. The two notches
(keys) on the bottom edge of the module ensure that the DIMM edge connector is registered properly in
the socket. (See Figure 50.)
If necessary, rock the DIMM back and forth gently to align it in the socket.